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Stephen Nicholas CAFS, NCT

Nicholas is president of Air Industries, Inc. (North Andover, MA) an independent factory trained authorized manufacturer’s representative and consultant with over 25 years of HVAC air filtration experience. He has been professionally trained by the Harvard School of Public Health for certifying HEPA Filters for Nuclear and Non-Nuclear applications. He is past president of the National Air Filtration Association and is a Certified Air Filtration Specialist and Certified Technician Level II-Bag/In Bag/Out for chemical, biological, and radiological contaminants. He is also a member of ASHRAE and serves on several ASHRAE Committees. Reach him by e-mail at


Air Filtration Efficiencies For Hospital And Health Care Facilities

In almost any aspect of health care, standards and/or regulations can border on the overwhelming. Air filtration is no different, yet as in other aspects of health care, proper performance is critical for safety as well as licensure. Keep up with classifications for filtration efficiencies, three patient segregation categories pertinent to filtration, and the latest on various professional guidance.
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Engineered Systems Magazine


2014 December

Check out the December 2014 issue of Engineered Systems.
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Based on your experience and knowledge level, are you currently comfortable designing or maintaining a system incorporating VRF or radiant ceiling panels?
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This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!


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